Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 94, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Aug 29, 2021, 2:16 AM EDT for Bay County, Midland County, Michigan. It was in force for 44 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 29, 2021, 2:16 AM EDT (06:16 UTC)
- Expired
- Aug 29, 2021, 3:00 AM EDT
- In force
- 44 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bay County, MI, Midland County, MI
The radar
The Detroit radar (KDTX), 116 km from the middle of the area, began a volume at 06:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 2:16 AM EDT | TSTM WND DMG | 1 Ssw Midland, MI | WIRES DOWNED NEAR PINE ST AND GEORGE ST. |
| Aug 29, 2:21 AM EDT | TSTM WND DMG | 1 E Midland, MI | LARGE BRANCH DOWNED ON HOUSE ALONG 1900 BLOCK OF RAPANOS DR AND ALSO DOWNED WIRES. |
| Aug 29, 2:32 AM EDT | TSTM WND DMG | 4 W Auburn, MI | TREES AND WIRES DOWNED NEAR FISHER RD AND FLAJOLE RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 6.3 hours before the alert went out and 115 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1935 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
057
WUUS53 KDTX 290616
SVRDTX
MIC017-111-290700-
/O.NEW.KDTX.SV.W.0094.210829T0616Z-210829T0700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
216 AM EDT Sun Aug 29 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Western Bay County in southeastern Michigan...
East central Midland County in southeastern Michigan...
* Until 300 AM EDT.
* At 215 AM EDT, a severe thunderstorm was located over Midland,
moving northeast at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Auburn around 225 AM EDT.
Kawkawlin and Linwood around 240 AM EDT.
Pinconning around 255 AM EDT.
Other locations impacted by this severe thunderstorm include Crump,
Willard and Bay City State Recreation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4374 8391 4370 8388 4370 8389 4369 8387
4365 8377 4357 8407 4357 8417 4354 8417
4353 8421 4369 8434 4392 8387
TIME...MOT...LOC 0615Z 239DEG 25KT 4364 8419
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TF2 follow-up statements
123
WWUS53 KDTX 290638
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
238 AM EDT Sun Aug 29 2021
MIC017-111-290700-
/O.CON.KDTX.SV.W.0094.000000T0000Z-210829T0700Z/
Bay MI-Midland MI-
238 AM EDT Sun Aug 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM EDT
FOR WESTERN BAY AND EAST CENTRAL MIDLAND COUNTIES...
At 237 AM EDT, a severe thunderstorm was located near Auburn, moving
northeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe storm will be near...
Auburn around 250 AM EDT.
Bay City, Kawkawlin and Linwood around 315 AM EDT.
Other locations impacted by this severe thunderstorm include Crump,
Willard and Bay City State Recreation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4374 8391 4370 8389 4369 8387 4365 8377
4357 8407 4357 8417 4354 8417 4353 8421
4361 8428 4373 8426 4392 8387
TIME...MOT...LOC 0637Z 243DEG 9KT 4364 8413
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TF285
WWUS53 KDTX 290654
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
254 AM EDT Sun Aug 29 2021
MIC017-111-290703-
/O.EXP.KDTX.SV.W.0094.000000T0000Z-210829T0700Z/
Bay MI-Midland MI-
254 AM EDT Sun Aug 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN BAY AND EAST CENTRAL
MIDLAND COUNTIES WILL EXPIRE AT 300 AM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 4374 8391 4370 8389 4369 8387 4365 8377
4357 8407 4357 8417 4354 8417 4353 8421
4361 8428 4373 8426 4392 8387
TIME...MOT...LOC 0653Z 239DEG 25KT 4369 8401
$$
TFThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:18 PM EDT | Special Weather Statement | DTX | Saginaw | 72 min |
| Aug 28, 8:22 PM EDT | Special Weather Statement | DTX | Saint Clair, Sanilac | 68 min |
| Aug 28, 10:00 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 20 min |
| Aug 28, 10:17 PM EDT | Special Weather Statement | DTX | Genesee | 28 min |
| Aug 29, 1:53 AM EDT | Special Weather Statement | DTX | Bay, Midland | 67 min |
| Aug 29, 2:32 AM EDT | Special Marine Warning | DTX | 42 min | |
| Aug 29, 3:40 PM EDT | Special Weather Statement | DTX | Bay, Midland | 65 min |
| Aug 29, 3:54 PM EDT | Special Marine Warning | DTX | 108 min | |
| Aug 29, 4:07 PM EDT | Special Weather Statement | DTX | Saginaw, Shiawassee | 83 min |
| Aug 29, 4:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 75 min |
| Aug 29, 4:38 PM EDT | Special Weather Statement | DTX | Huron | 67 min |
| Aug 29, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 62 min |
| Aug 29, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Tuscola | 79 min |
| Aug 29, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 65 min |
| Aug 29, 5:32 PM EDT | Special Marine Warning | DTX | 118 min | |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 64 min |
| Aug 29, 5:58 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 62 min |
| Aug 29, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 59 min |
| Aug 29, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 77 min |
| Aug 29, 6:37 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 83 min |
| Aug 29, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 75 min |
| Aug 29, 6:51 PM EDT | Special Marine Warning | DTX | 114 min | |
| Aug 29, 7:00 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 57 min |
| Aug 29, 7:23 PM EDT | Special Weather Statement | DTX | Monroe | 67 min |
| Aug 29, 7:29 PM EDT | Special Weather Statement | DTX | Wayne | 61 min |
| Aug 29, 7:30 PM EDT | Special Marine Warning | DTX | 68 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.